「Swift」UISegmentedControlを切り替えるサンプル
書式
switch sender.selectedSegmentIndex
使用例
import UIKit
 
class ViewController: UIViewController {
 
    @IBOutlet weak var label: UILabel!
 
    @IBAction func segmentedControlChanged(_ sender: UISegmentedControl) {
        switch sender.selectedSegmentIndex {
        case 0:
            label.text = "LabelA"
        case 1:
            label.text = "LabelB"
        case 2:
            label.text = "LabelC"
        default:
            break
        }
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }
}